Detections
Analytics
Security Updates for Microsoft Skype for Business (May 2021)
high Nessus Plugin ID 149479
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Synopsis
The Microsoft Skype for Business installation on the remote host is affected by multiple vulnerabilities.Description
The Microsoft Skype for Business installation on the remote host is missing security updates. It is, therefore, affected by multiple vulnerabilities:- A session spoofing vulnerability exists. An attacker can exploit this to perform actions with the privileges of another user. (CVE-2021-26421)
- A remote code execution vulnerability. An attacker can exploit this to bypass authentication and execute unauthorized arbitrary commands. (CVE-2021-26422)
Solution
Microsoft has released KB5003729 to address this issue.See Also
Plugin Details
Severity: High
ID: 149479
File Name: smb_nt_ms21_may_skype.nasl
Version: 1.6
Type: local
Agent: windows
Family: Windows : Microsoft Bulletins
Published: 5/14/2021
Updated: 1/2/2024
Supported Sensors: Nessus Agent, Nessus
Risk Information
VPR
Risk Factor: Medium
Score: 6.7
CVSS v2
Risk Factor: Medium
Base Score: 6.5
Temporal Score: 5.4
Vector: CVSS2#AV:N/AC:L/Au:S/C:P/I:P/A:P
CVSS Score Source: CVE-2021-26422
CVSS v3
Risk Factor: High
Base Score: 7.2
Temporal Score: 6.7
Vector: CVSS:3.0/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
Temporal Vector: CVSS:3.0/E:F/RL:O/RC:C
Vulnerability Information
CPE: cpe:/a:microsoft:skype_for_business
Required KB Items: SMB/MS_Bulletin_Checks/Possible
Exploit Available: true
Exploit Ease: Exploits are available
Patch Publication Date: 5/13/2021
Vulnerability Publication Date: 5/13/2021
Reference Information
CVE: CVE-2021-26421, CVE-2021-26422